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A kind of magnetic porous carbon material and its preparation method and application

A porous carbon and magnetic technology, applied in the field of environmental remediation, can solve the problems of short life and limited adsorption capacity, and achieve the effects of strong and easy recovery, improved adsorption capacity, and simple synthesis method.

Active Publication Date: 2022-07-26
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the adsorption materials disclosed in related technologies have limited adsorption capacity and short service life, which need further improvement.

Method used

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  • A kind of magnetic porous carbon material and its preparation method and application
  • A kind of magnetic porous carbon material and its preparation method and application
  • A kind of magnetic porous carbon material and its preparation method and application

Examples

Experimental program
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Embodiment 1

[0065] The present embodiment provides a magnetic porous carbon ball, the preparation method of which includes the following steps:

[0066] Step 1): Combine 10 g NaOH and 5.04 g Na 2 SO 3 Dissolved in 100ml ultrapure water, ultrasonically treated for 20min to obtain 2.5M NaOH and 0.4M Na 2 SO 3 mixed solution. Put 5g of wood balls with a diameter of 8mm (as shown in the actual picture) figure 1 A) soaked in 50 mL of mixed solution, ultrasonicated for 30 min, transferred to the reaction kettle, kept at 100 °C for 10 h, cooled to room temperature after the reaction, and rinsed with deionized water.

[0067] Step 2): put the above-reacted biomass in 50 mL of 2.5M H 2 O 2 , transferred to a reaction kettle, heated to 100 °C, stopped heating after 6 hours of reaction, taken out after cooling, and freeze-dried to obtain millimeter fiber balls.

[0068] Step 3): Fe(NO) of a certain mass (0g, 2g, 4g or 6g) 3 ) 3 ·9H 2 O was dissolved in 50 ml of ethanol solution and sonicat...

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Abstract

The invention discloses a magnetic porous carbon material and a preparation method and application thereof. The magnetic porous carbon material includes porous carbon and nano zero-valent iron, the diameter of the porous carbon is 6-10 mm, and the nano zero-valent iron supports in the porous carbon. The invention can effectively reduce the interference of the porous carbon by soil particles or colloidal particles by using the millimeter-scale porous carbon to load the active material nano-zero-valent iron, effectively improve the adsorption and fixation of heavy metals, and prolong the life of the material; Millimeter-sized porous carbon is easy to recycle, which can realize the extraction and separation of heavy metals from polluted water or soil, reduce the content of heavy metals in water or soil, and realize the recycling of materials.

Description

technical field [0001] The invention relates to the technical field of environmental restoration, in particular to a magnetic porous carbon material and a preparation method and application thereof. Background technique [0002] With the rapid development of industrialization and urbanization, the ecological environment system is increasingly affected by human activities, especially the mining and smelting of rare metals, and the use of unqualified pesticides and other human production activities that lead to a large number of pollutants containing heavy metals entering the soil. Cadmium (Cd) pollution is the most serious. Cd is a toxic and carcinogenic heavy metal. Cd pollution has the characteristics of bioaccumulation and high persistence, which has a great impact on the growth, yield and quality of crops. Dietary studies have shown that rice is the main route of cadmium intake. Once the irrigation water containing cadmium enters the paddy field, it will pollute the soi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01J20/32C02F1/28B09C1/00C02F101/20C02F101/10
CPCB01J20/20B01J20/28009B01J20/3078B01J20/32C02F1/283B09C1/00C02F2101/20C02F2101/103
Inventor 方利平李芳柏朱振龙刘凯
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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